Examine source code of SAP IS Better UI

{
  "manifest_version": 3,
  "name": "SAP IS Better UI",
  "version": "1.0.3",
  "description": "Extensible UI modifier for SAP IS",
  "action": {
    "default_popup": "popup/popup.html",
    "default_icon": "icons/better-ui-is-48.png"
  },
  "icons": {
    "16": "icons/better-ui-is-16.png",
    "32": "icons/better-ui-is-32.png",
    "48": "icons/better-ui-is-48.png",
    "128": "icons/better-ui-is-128.png"
  },
  "permissions": [
    "activeTab",
    "storage"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://*.hana.ondemand.com/shell/*"
      ],
      "js": [
        "core/page-bridge.js"
      ],
      "run_at": "document_start",
      "world": "MAIN"
    },
    {
      "matches": [
        "https://*.hana.ondemand.com/shell/*"
      ],
      "js": [
        "core/registry.js",
        "plugins/better-package-listview.js",
        "core/loader.js",
        "core/messaging.js"
      ],
      "run_at": "document_idle",
      "css": [
        "core/base.css"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "@sap-is-better-ui",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}